A delta folder with sample data is created by deltalake python package. Duckdb can read it properly:
<code>./duckdb -c "select * from delta_scan('data2/datadelta')"
┌───────┬─────────┬──────────────────────────┐
│ id │ name │ dob │
│ int64 │ varchar │ timestamp with time zone │
├───────┼─────────┼──────────────────────────┤
│ 1 │ john │ 2023-12-31 18:00:00-06 │
│ 2 │ jane │ 2024-02-01 18:00:00-06 │
│ 3 │ jill │ 2024-03-02 18:00:00-06 │
│ 4 │ jack │ 2024-04-03 19:00:00-05 │
└───────┴─────────┴──────────────────────────┘
</code>
<code>./duckdb -c "select * from delta_scan('data2/datadelta')"
┌───────┬─────────┬──────────────────────────┐
│ id │ name │ dob │
│ int64 │ varchar │ timestamp with time zone │
├───────┼─────────┼──────────────────────────┤
│ 1 │ john │ 2023-12-31 18:00:00-06 │
│ 2 │ jane │ 2024-02-01 18:00:00-06 │
│ 3 │ jill │ 2024-03-02 18:00:00-06 │
│ 4 │ jack │ 2024-04-03 19:00:00-05 │
└───────┴─────────┴──────────────────────────┘
</code>
./duckdb -c "select * from delta_scan('data2/datadelta')"
┌───────┬─────────┬──────────────────────────┐
│ id │ name │ dob │
│ int64 │ varchar │ timestamp with time zone │
├───────┼─────────┼──────────────────────────┤
│ 1 │ john │ 2023-12-31 18:00:00-06 │
│ 2 │ jane │ 2024-02-01 18:00:00-06 │
│ 3 │ jill │ 2024-03-02 18:00:00-06 │
│ 4 │ jack │ 2024-04-03 19:00:00-05 │
└───────┴─────────┴──────────────────────────┘
Open source unity catalog is able to register the table, but not able to query it.
<code>bin/uc table create --full_name unity.default.data --storage_location "/home/user1/work/unitycatalog/data2/datadelta" --columns "id INT, name STRING, dob DATE" --format DELTA
</code>
<code>bin/uc table create --full_name unity.default.data --storage_location "/home/user1/work/unitycatalog/data2/datadelta" --columns "id INT, name STRING, dob DATE" --format DELTA
</code>
bin/uc table create --full_name unity.default.data --storage_location "/home/user1/work/unitycatalog/data2/datadelta" --columns "id INT, name STRING, dob DATE" --format DELTA
<code>bin/uc table read --full_name unity.default.data
Error occurred while executing the command. Failed to read delta table file:///home/user1/work/unitycatalog/data2/datadelta/Failed to read delta table
</code>
<code>bin/uc table read --full_name unity.default.data
Error occurred while executing the command. Failed to read delta table file:///home/user1/work/unitycatalog/data2/datadelta/Failed to read delta table
</code>
bin/uc table read --full_name unity.default.data
Error occurred while executing the command. Failed to read delta table file:///home/user1/work/unitycatalog/data2/datadelta/Failed to read delta table